The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 4 */5 * *
This cron command translates to the following (in Human-Readable format):
“Every 5 days at 4:00 am.”
What is a Cron Job & Crontab?
In computing, a cron job is a time-based task that is set to run at certain predetermined times or intervals. A cron job can be used to schedule anything from basic tasks like running backups to more complex tasks like sending out email alerts or syncing files between servers. Cron jobs are typically used for maintenance or administrative tasks that need to be performed on a regular basis.
A crontab is a file containing commands and instructions for the cron daemon to execute.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 5 days at 4:00 am“:
FUN FACT: When editing your crontab, it is important to use a text editor that supports Unix-style line endings (LF), as opposed to Windows-style line endings (CRLF)..
You might want to set up a crontab or cron job to run every 5 days at 4:00 am for several reasons, including:
- Automatically send out a report to all employees every 5 days
- Run a script to update a website every 5 days
- Perform maintenance on a database every 5 days
Similar Cron Jobs
You might also want to run a crontab:
- every 3 days
- every 1 day
- every 9 days
- every 8 days
- every 10 days
- every 5 days at 5:00 pm
- every 1 day at 6:30 am
- every 8 days at 5:30 pm
FUN FACT: Cron jobs can be used to automate just about any task that needs to be performed regularly – so get creative and see what you can come up with!.
In this article, you learned how to set up a cron job that runs every 5 days at 4:00 am. Please share this page with friends and colleagues if you find it useful.
If you have any questions, please don’t hesitate to comment below.
If you are looking for cron jobs that run at certain minutes, hours, days, weekdays, or months, or if you are looking for miscellaneous cron jobs, then check out our relevant sections, or visit our cron job cheat sheet for a list of hundreds of popular cron jobs.